CalcRun — salary, mortgage, investing and debt calculators. Answers in seconds. No signup. No ads.
01 — Grow
Grow it.
What steady monthly amounts become over ten, twenty, forty years.
02 — Keep
Keep it.
Tax, National Insurance, deductions — what is actually left, to the pound.
03 — Owe
Owe it.
What borrowing costs month by month, and what one percent changes.
Your turn
Run your numbers
The same questions, live — answers as you type. No signup, no ads.
You could afford up to
$396,902
$2,250/mo at 6.75% over 30 years
You could afford up to
$396,902
$2,250/mo at 6.75%
Preview only. Open the full calculator for the full breakdown.
View all calculatorsYou could afford up to
$396,902
$2,250/mo at 6.75% over 30 years
You could afford up to
$396,902
$2,250/mo at 6.75% over 30 years
After 30 years
$609,985
You could retire at
Age 66
36 years of saving to reach $1,000,000 at 7% return
Your monthly take-home
$5,719
$68,628/yr after $16,373 in deductions · 2026 federal + FICA, single filer
Live calculations
Good financial decisions create value
Every number below comes from a CalcRun calculator. Open one and run your own.
- Start investing at 25 instead of 35 — £250 a month at 7% +£351,211 by 65
- Put £100 more into your pension every month +£121,997 after 30 years
- Negotiate one percent off a $300K mortgage −$69,421 over the loan
- The taxman’s share of a £50,000 salary £10,480 a year
- Pay £250/mo on a £5,000 card instead of £150 debt-free 26 months sooner
- Wait five years before starting to invest £500/mo −£204,950 at year 30
The full toolkit
Every corner of your money
Saving & Growth
6Watch your money compound over time.
- Compound Interest
- Investment Return
- Savings Goal
Debt & Loans
7Understand every payment before you sign.
- Loan Amortization
- Mortgage Payment
- Mortgage Affordability
Income & Planning
7Know exactly what you keep and what you need.
- Retirement Savings
- Retirement Contribution
- Retirement Age
Economic
3Track the forces that affect every pound and dollar.
- Inflation
- Stamp Duty
- Capital Gains Tax
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Built by an ACA-qualified accountant Tax rates verified for 2026/27 (UK) & 2026 (US) Every calculator documents its formula